Bio

            Bio-molecules are built by assembling atoms, by virtue of covalent bonds. The most collective elements that can be discovered in biomolecules are the CHNOPS element, which stands for the basic abbreviation of carbon, hydrogen, nitrogen, phosphorus, and sulfur. Each one of these elements has a specific valence. A valence resolves the number from the covalent bonds it can be able to form. Presuming on the total of electrons in the exterior shell that decides the ability of an atom to connect with other atoms. Every atom may have one or more protons, which carry a positive electric charge. Protons and neutrons form the atoms in atomic nucleus. Electrons transfer a negative charge and fill most of the atoms volume. Every atom has the equivalent number of electrons as protons. By no means we know that an atom carries no charge making it neutral. In the event that atoms share an electron pair this is called a covalent bond. Every atom grows more solid by sharing its uneven electron with the other. We shall discuss the polar and non-polar covalent bonds. Within a polar covalent bond, atoms of different elements do not install the same pull on shared electrons. The atom that receives the electron ends up with a slender negative charge making it electronegative. While non-polar method states that there is no difference in charge between to ends of the bond, atoms share the electrons evenly . A worthy explanation is to say that molecular hydrogen is non-polar. .
             The types of electrons sharing in covalent bonds contain atoms together in positive arrangements in molecules. Hydrogen bond are weak bonds that can draw water molecules to each other, but results from electrostatic temptation between electronegative atoms together with a hydrogen atom that is bonded covalently up to a second electronegative atom. In water molecule it has no net charge, however it does carry unevenly distribution. So we know that Hydrogen bonds may be able to form between two or more molecules.